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O1

• Type locality: Kainukizawa, Kashimadai, Osaki city, Miyagi prefecture
• Coherent formation
• Miocene

• Lithofacies (Top): Sandstone
• Lithofacies: Breccia-bearing sandstone

• Thickness: 4 - ca. 12 m

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Kainukizawa, Kashimadai, Osaki city, Miyagi pref.
• Fossils: Shellfishes

• Ishii et al. (1982) Geology of the Matsushima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 9p.)